Tristram d



) (No Model.)

T. D. BROWN. BOTTOM FOB METALLIC VESSELS.

110,577,944. Patented Mar. 2, 1897.

Tn: ncnrus pz'rzns co. PNQTO-LITHO.. WASHINGTON u c UNITED STATES PATENT OFFICE.

TRISTRAM D. BROWN, OF OANANDAIGUA, NEWV YORK, ASSIGNOR TO THE LISK MANUFACTURING COMPANY, LIMITED, OF SAME PLACE.

BOTTOM FOR METALLIC VESSELS.

SPECIFICATION forming part of Letters Patent N 0. 577,944, dated March 2, 1897.

Application filed December 30, 1895- Serial No. 573,778. (No model.)

To all whom it may concern.-

Be it known that I, TRISTRAM D. BROWN, a citizen of the United States, residing at Oanandaigua, in the county of Ontario and State of New York, have invented a certain new, useful, and valuable Improvement in Bottoms for Metallic Vessels, of which the following is a full, clear, and exact description.

My invention has relation to bottoms for metallic vessels; and it consists in the novel construction and arrangement of its parts, as hereinafter described.

The object of my invention is to provide a vessel with azinc or aluminium bottom, said bottom being so formed as to diffuse the dregs over as large an area of the bottom as possible, thereby retaining much longer the integrity of thebottom.

In the accompanying drawings, Figure 1 is a sectional view of a vessel provided with my improved bottom. Fig. 2 is a plan view of the bottom.

The bottom is composed of two sheets of metal, the upper sheet 1 being of zinc or aluminium, while the under sheet is of tin, iron, or any other suitable metal. The two sheets are secured at their edges alone to the sides of thevessel. Each sheet is provided around its periphery with a flange. These flanges are bent up around the lower edges of the sides, as shown in Fig. 1, thereby securing the sheets to the body of the vessel. Each of the sheets 1 and 2 is convexed, as shown in Fig. 1, and around the outer periphery of the sheets but within the sides of the vessel the sheets are slightly depressed, as at 3.

When the vessel contains a liquid, the dregs will settle, and as they touch the convexed surface of the inner sheet 1 they are difiused to the depression 3. Thus they are distributed over a greater area and the bottom retains its integrity longer.

Owing to the fact that the two metals which compose the bottom do not expand or contract with uniformity, the conveX shape of the sheets compensates therefor and the sheets will not buckle.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

A bottom for metallic vessels, consisting of a metallic sheet having in its central portion a complete convexity, said complete convexity Within the sides of the vessel merging into an annular depression, said depression surrounding the convex portion of the sheet, said depression having an elevated edge abutting against the sides of the vessel, said convexity adapted to direct the sediment in the vessel into the annular depression, and the elevated edge surrounding the depression also adapted to direct the sediment into the depression.

In testimony whereof I affix my signature in presence of two witnesses.

TRISTRAM D. BROWN.

Witnesses:

M. F. I-IIcKoK, L. A. PARKHURST. 

